diff -up ./src/Phan/Bootstrap.php.rpm ./src/Phan/Bootstrap.php
--- ./src/Phan/Bootstrap.php.rpm	2021-05-20 08:05:36.000000000 +0200
+++ ./src/Phan/Bootstrap.php	2021-05-20 08:08:31.358343779 +0200
@@ -104,20 +104,6 @@ EOT
     fwrite(STDERR, "For more information, see https://github.com/phan/phan/wiki/Getting-Started#installing-dependencies" . PHP_EOL);
 }
 
-// Use the composer autoloader
-$found_autoloader = false;
-foreach ([
-    dirname(__DIR__, 2) . '/vendor/autoload.php', // autoloader is in this project (we're in src/Phan and want vendor/autoload.php)
-    dirname(__DIR__, 5) . '/vendor/autoload.php', // autoloader is in parent project (we're in vendor/phan/phan/src/Phan/Bootstrap.php and want autoload.php
-    dirname(__DIR__, 4) . '/autoload.php',        // autoloader is in parent project (we're in non-standard-vendor/phan/phan/src/Phan/Bootstrap.php and want non-standard-vendor/autoload.php
-    ] as $file) {
-    if (file_exists($file)) {
-        require_once($file);
-        $found_autoloader = true;
-        break;
-    }
-}
-
 if (extension_loaded('ast')) {
     // Warn if the php-ast version is too low.
     $ast_version = (string)phpversion('ast');
@@ -169,11 +155,9 @@ if (extension_loaded('ast')) {
     }
     unset($ast_version);
 }
-unset($file);
-if (!$found_autoloader) {
-    fwrite(STDERR, "Could not locate the autoloader\n");
-}
-unset($found_autoloader);
+
+// Use the fedora autoloader
+require_once __DIR__ . '/../autoload.php';
 
 define('EXIT_SUCCESS', 0);
 define('EXIT_FAILURE', 1);
diff -up ./src/phan.php.rpm ./src/phan.php
--- ./src/phan.php.rpm	2021-05-20 08:05:36.000000000 +0200
+++ ./src/phan.php	2021-05-20 08:06:58.598558870 +0200
@@ -1,3 +1,4 @@
+#!/usr/bin/env php
 <?php
 
 declare(strict_types=1);
diff -up ./src/Phan/Plugin/ConfigPluginSet.php.rpm ./src/Phan/Plugin/ConfigPluginSet.php
--- ./src/Phan/Plugin/ConfigPluginSet.php.rpm	2021-05-20 08:05:36.000000000 +0200
+++ ./src/Phan/Plugin/ConfigPluginSet.php	2021-05-20 08:06:58.598558870 +0200
@@ -907,7 +907,7 @@ final class ConfigPluginSet extends Plug
      */
     public static function getBuiltinPluginDirectory(): string
     {
-        return \dirname(__DIR__, 3) . '/.phan/plugins';
+        return \dirname(__DIR__, 2) . '/plugins/';
     }
 
     private function ensurePluginsExist(): void
diff -up ./src/prep.php.rpm ./src/prep.php
--- ./src/prep.php.rpm	2021-05-20 08:05:36.000000000 +0200
+++ ./src/prep.php	2021-05-20 08:06:58.598558870 +0200
@@ -1,3 +1,4 @@
+#!/usr/bin/env php
 <?php
 
 declare(strict_types=1);
diff -up ./src/requirements.php.rpm ./src/requirements.php
--- ./src/requirements.php.rpm	2021-05-20 08:05:36.000000000 +0200
+++ ./src/requirements.php	2021-05-20 08:06:58.598558870 +0200
@@ -2,11 +2,11 @@
 
 declare(strict_types=1);
 
-if (!(file_exists(__DIR__ . '/../vendor/autoload.php') || file_exists(__DIR__ . '/../../../autoload.php'))) {
+if (!(file_exists(__DIR__ . '/autoload.php'))) {
     // @phan-suppress-next-line PhanPluginRemoveDebugCall
     fwrite(
         STDERR,
-        'Autoloader not found. Make sure you run `composer install` before running Phan. See https://github.com/phan/phan#getting-started for more details.'
+        'Autoloader not found.'
     );
     exit(1);
 }